[Gluster-users] Memory leak with glusterfs NFS on 3.2.6

Xavier Normand xavier.normand at gmail.com
Tue Jun 12 13:02:41 UTC 2012

Hi Philip,

I do have about the same problem that you describe. There is my setup:

Gluster: Two bricks running gluster 3.2.6

4 clients running native gluster fuse client.
2 clients running nfs client

My nfs client are not doing that much traffic but i was able to view after a couple days that the brick used to mount the nfs is having memory issue.

i can provide more info as needed to help correct the problem.



Le 2012-06-12 à 08:18, Philip Poten a écrit :

> 2012/6/12 Dan Bretherton <d.a.bretherton at reading.ac.uk>:
>> I wonder if this memory leak is the cause of the NFS performance degradation
>> I reported in April.
> That's probable, since the performance does go down for us too when
> the glusterfs process reaches a large percentage of RAM. My initial
> guess was that it's the file system cache that's being eradicated,
> thus iowait increases. But a closer look at our munin graphs implies,
> that it's also the user space that eats more and more CPU
> proportionally with RAM:
> http://imgur.com/a/8YfhQ
> There are two restarts of the whole gluster process family visible on
> those graphs: one a week ago at the very beginning (white in the
> memory graph, as munin couldn't fork all it needed), and one
> yesterday. The drop between 8 and 9 was due to a problemv unrelated to
> gluster.
> Pranith: I just made one dump, tomorrow I'll make one more and mail
> them both to you so that you can compare them. While I just restarted
> yesterday, the leak should be visible, as the process grows a few
> hundred MB every day.
> thanks for the fast reply,
> Philip
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> Gluster-users at gluster.org
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